They want to switch from Treo 750w phones to BB due to reliability issues with the Treo and the lack of storage on them. Even with a 2gb card they run out of room - the roadwarriors think it's desktop email in their hand, not a mobile mail reader. Not that it'll be better with a BB.

Outlook on WM5/6 suffers from a 'broken' IMAP implementation also. No sync of sent or deleted items.

Checked into Versalink - they balked when I asked about multiple account sync.